Why are you debiting me

I dont have a policy with yall but I am shocked to see that you guys are debiting my account. I never signed up with yall I dont even have any documents from you so what exactly are you debiting my acc for? I called in to be assisted by a consultant Dumisane Pienaar, a very rude lot who thinks he knows it all better than me. Imagine he even had the audacity of wanting to explain to me what a debit check mandate is. He kept on talking over me and I kept on repeating that I dont have a product by them and Im not interested. I want my refund!!!!!!!!!!!!!!!